mtj ndy



'2 SheetsSheet 1.

(ModeL) J. A. MU'NDY.

ROLLER SKATE.

Patented Nov. 3

lpc' hwn N. PETERS. Mo-Lilbagnaber, Wllhingtnn, DJ}.

(ModeL) 2 Shgets-Sheet 2. J. A. MUNDY.

ROLLER SKATE. No. 329,845. Patented Nov. 3, 1885.

UNITED STATES PATENT OFFICEO JOHN A. MUNDY, OF SYRACUSE, NEW YORK.

ROLLER-SKATE.

SPECIFICATION forming part. of Letters Patent No. 329,845, datedNovember 3, 1885.

Application filed February 19, 1885. Serial No. 156,330. (ModcLl To allwhom, it may concern:

Be it known that I, J onn A. MUNDY, a citizen of the United States,residing at Syracuse, county of Onondaga, and State of New York, haveinvented a new and useful Improvement in Roller-Skates, of which thefollowing is a specification.

My invention relates to improvements in roller-skates in which any kindof bottom is used and the front roller is rigidly attached thereto, andthe hind roller is provided with self-adjusting mechanism; and theobjects of myinvention are, first, to provide a rigid front roller;second, to provide a hind roller with self-adj usting mechanism tofacilitate the steering and relieve the ankle and foot from the strainexperienced where the hind rollers are also rigidly attached to theskate-bottom; and, third, to reduce the friction occasioned by the useof rigidly attached rollers.

I attain these objects by mechanism illustrated in the accompanyingdrawings,in which Figure 1 is a plan view of the skate complete. Figs. 2and 4 are plan views of the front roller, showing both the beveled andround edges. Fig. 3 is a plan view of the hind roller and mechanism.Fig. 5 is a top view of the same. Fig. 6 is also a plan view of a skatewith the same hind roller as shown in Fig. 1, but with a front rollerwith adjustable mechanism in place of the rigid roller; and Fig. 7 is afront view of the roller and mechanism.

Similar letters refer to similar parts throughout the several views.

A represents the bottom of the skate, B the front roller, and O the hindroller.

The roller B has axle-supports a b, which are pendent from ayoke-platewhich is firmly riveted or fastened to the skate-bottom, ren dering theroller rigid.

The roller 0 has axle-supports c d, which are pendent from theyoke-plate D. Into the center of the yoke-plate is countersunk acircular mortise, e, and fitted thereto and placed therein is thecircular plate E, which revolves to right or left about the axle-screwf, which also holds it in place. Attached to the side of the circularplate E are the lugs l 2. At each side of the yoke-plate D are theguidegrooves g h, cut at an angle of about forty-five degrees to theface-surface of the plate. The

3, fitted to fill the space between lugs 1 2, all

of which are bored, and through them passes the pin t, connecting thetwo plates, and also forming an axle upon which the plate F rocks backand forth to either side. At either end of the plate F, and extendingdownward there from at an angle of about forty-five degrees, are theguidearms Z, which, as the plates are pinned together, enter theguide-grooves g h. At either side of the lug 3, and between the plates FD, are placed rubber supports m n, mortises being countersunk in bothplates to receive the ends thereof to aid in adjusting the plates andretaining them at a parallel with each other.

In the place of the rigid roller B, I also use the adjustable roller B,which has axle-supports a b extending from yoke-plate D. The plate Dhastwo lugs, 1 2, between which the lug 3 of the plate F is placed, and allof which are bored to receive the pin At the ends of the plates D F areplaced rubber supports m n, countersunk into said plates in aid in adjusting the plates to a parallel with each other. By the mechanism thusdescribed I secure the positive combined rotary and rocking motion,either to the right or left, according to the way I choose to steer theskate, and at the same time the flat surface of the roller rests evenlyupon the floor, and in all positionsthe ankle and foot are relieved fromthe strain experienced when the rollers are rigidly attached; and also Iam able to turn a circle nearly around in the length of the skate.

I use the rigid roller either with flat, beveled, or round surface, butprefer the beveled surface.

It is apparent that by means of the rollers provided with adjustablemechanism I greatly diminish the friction and enable the skater to skatemore rapidly.

Having thus fully described my invention, what I claim is 1. In rollerskates, the circular plate E, having lugs 1 2, and axle-screwf, incombination with yoke-plate D, having circular mortise e, guide-groovesg h, axle-supports c d, roller 0, and with plate F, having guidearms kZand lug 3, pin 6, and the rubber sup- ICO ports m n, to give rotarymotion in steering the skate, as and for the purposes specified.

2. In roller-skates, the yoke-plate D, having a circular mortise, e,guide-grooves g h, and axle-supports c d, in combination with roller 0,circular plate E, provided with lugs 1 2, plate F, having guide-arms 70land lug 3, pin i, and rubber supports m n, to provide a rocking motionin steering the skate, as shown and specified.

3. In roller-skates, the combination of the circular plate E, yoke-plateD, and plate F, provided with the mechanism described, to simultaneouslyproduce both the rotary and JOHN A. MUN DY.

In presence of HANER-WEsToN, M. F. SHERLOCK.

